Efficient Privacy-Preserving Authentication Protocol for Vehicular Communications with Trustworthy

TL;DR

This paper presents a new efficient privacy-preserving authentication protocol for VANETs that ensures trustworthiness, reduces communication overhead, and enables fast anonymous authentication and privacy tracking.

Contribution

It introduces a proxy re-signature based protocol with a trusted authority design that enhances privacy, trustworthiness, and efficiency in vehicular communications.

Findings

Provides fast anonymous authentication and privacy tracking.

Reduces communication overhead and storage requirements.

Guarantees message trustworthiness in V2V communications.

Abstract

In this paper, we introduce an efficient and trustworthy conditional privacy-preserving communication protocol for VANETs based on proxy re-signature. The proposed protocol is characterized by the Trusted Authority (TA) designating the Roadside Units (RSUs) to translate signatures computed by the On-Board Units (OBUs) into one that are valid with respect to TA's public key. In addition, the proposed protocol offers both a priori and a posteriori countermeasures: it can not only provide fast anonymous authentication and privacy tracking, but guarantees message trustworthiness for vehicle-to-vehicle (V2V) communications. Furthermore, it reduces the communication overhead and offers fast message authentication and, low storage requirements. We use extensive analysis to demonstrate the merits of the proposed protocol and to contrast it with previously proposed solutions.